Superposed two frame system elastic screening machine having independent oscillating drives for each frame system
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United States of America Patent
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Aug 6, 1991
Grant Date -
N/A
app pub date -
Jun 29, 1990
filing date -
Jun 29, 1989
priority date (Note) -
Expired
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Abstract
In a screening machine comprising two screening frames (13 and 31) each having mutual oppositely located feed and discharge ends on which there is arranged an elastic screening lining (54) and which are caused to oscillate by independent oscillating drives wherein the two screening frames (13 and 31) are associated with each other at different heights in such a way that the lower region of the upper screening frame (31) and the upper region of the lower screening frame (13) lie in a common plane, that the elastic screening lining (54) is secured to the two screening frame (13, 31) in the common plane thereof and that the upper screening frame (31) is independently driven in a circular configuration at the feed end and the lower screening frame (13) is indepndently driven in a circular configuration at the discharge end.
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